Unfamiliar with an Ed Brown gun. Is that a pistol or a carbine? A 100 yard shot with a pistol is way out of my league. A 100 yard shot with a carbine calibered in 45 ACP I could do.
I don’t know a lot about Ed Brown guns other than what I have read. I think he is from Illinois and makes expensive and highly regarded .45 autos.
modified 1911 Colt Series 70. I’ve shot quite a bit of game with a pistol past 100 yards, but I shoot a lot, still about 100 pistol rounds a week.